Actual length about 1-1/2 inch.
Fig. 45.—Diagram of Nemertine—Nemertopsis.
cg and sg, Sense organ; a, eyes; gh, brain; bl, blood vessels; n, nerve cord; d, alimentary canal; ex, nephridia; r, snout, withdrawn.
The ordinary star-fish is carnivorous, and lives largely on ordinary mussels, which it bridges over with its arms, and opens by a steady and long-continued pulling, the soft parts being then sucked up by the partially protruded stomach. A few types of Echinoderms are shown in Figs. 46, 47, 48.
Fig. 46.—Star-fishes.
Fig. 47.—Feather Star.